Emprego do SPT-T e pressiômetro Ménard em um depósito arenoso da região litorânea de João Pessoa.

Abstract

The idea of complementing traditional SPT with torque measurement was initially proposed by Ranzini (1988) however only in 1991 it was used in Sao Paulo state (Decourt and Quaresma Filho, 1991). On ther other hand, in the north-east of Brazil, SPT-T was used rarely from the practical point of view but without any research data avaiable. The present research used SPT-T with the main objectives of evaluating its performance and obtaining parameters for foundation design aiming to a database formation. In the same time, Menard pressuremeter tests (PMT) will be carried out for the determination of strength and deformation parameters. The results obtained will be used for a correlation statical analysis. The campain of tests was accomplished in a sand deposit located in the coast of Joao Pessoa (Paraiba state). This deposit was first submitted to a locally and normally used improvement by placing sand and gravel piles with the objective of replacing deed foundation by shallow foundation. In a general way, it was observed that the use of existing parameters indicated the positive influence of the improvement of the sandy deposit. Also, the results showed that after the improvement the parameters obtained by SPT-T and PMT were not satisfactorily correlated. Due to this fact it is necessary to analyze what cause the lack of satisfactory correlation, which seems to be caused by the disturbance due to the driven of the sand and gravel piles.